Secondary or storage battery.



8. FORD.

SECONDARY 0R STORAGE BATTERY.

APPLICATION FILED APR. 22. I915.

l,210,786. Patented Jan. 2, 1917.

' r f mmmral? mcontainer or it may he used for the BRUCE FORD, OF PHILADELPHIA. PENNSYLVANIA.

SECONDARY OR STORAGE BATTERY.

Application filed April 22, 1915.

To all whom it may conecrn Be it known that I, BRUCE Form. a. citizen of the United States. and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania. have invented eerta'in new and useful Improvements in Secondary or Storage. Batteries, of which the following is a specification.

Occasionally sea Water reaches and floods the battery compartments or rooms of vessels or submarines and it is desirable to prevent or oppose the entry of sea water into the battery containers or jars. which though covered are usually vented.

The principal object of the present invention is to provide simple. reliable and etlicient means for preventing or opposing the entry of sea Water through the vent ot' stor age hattery jars or containers in cases of ac cidents in which the battery room or compartment is wholly or partly flooded or submerged.

To this and other ends hereinafter set forth the invention stated in general terms comprises the combination in a storage hat I y of r. *losed container or jar having a vent ow .ing with a trap applied to the opemn or opposing the entry of sea water.

The ruentifin also comprises the in1provements t he presently described and finally claimed.

In the drawings Figure l is a View, partly diagrammatic and partly in section, illustrating features of the invention. and Fig. 2, is a sectional View illustrating a. modifiea tion of the invention.

In the drawings 1 is a storage battery container or jar containing plates (1 and electrolyte b, and closed as by means of a cover 2, sealed as at 3.- i

8 is a vent openiny.

The stem 9 having openings as shown in connection with the skirt 10. which depends around the stem. constitutes a sea water or air trap. A modification of the sea water trap is shown at 8" and in this case the tubular stem s turned into inverted U-l'orm so that its open end depends as at 10. The vent opening may he used either for the admission of air to the interior of the jar or escape of gas from the interior of the jar or con tainer. As shown in Fig. l. the .vent opening is used for the inlet of air. To this end there is provided an exhaust connection 4 Specification of Letters Patent.

Patented Jan. 2, 1917. Serial No. 23,009.

communicating with the jar or container as at There are, of coursm exhaust connections for difl'erent jars or containers and hence two such connections are shown. There are means for making the exhaust connections ineffective. As shown the mlve indicated at 6 is an example of such means but this showing is not intended to imply that emrivalent means may not be employed. For example there are types of exhausters which when at rest operate to prevent the passage of anything through them. lnasmuch as there may be additional extensions the cap 7 is illustrated.

Referring to Fig. 1, in the event of a flood of sea. water. the exhausters are rendered inefi'ectivc as by closing the valve (3. To the extent that air or gas is retained in the hattery jar or container, the entr of sea water is prevented or opposed and the described trap opposes the escape of air and so the entry of sea water is opposed or prevented. The gases that are generated in the jar or container. since the trap prevents their escape, except by displacing the sea water in the trap oppose the entry of water into the jar or container.

Referring to Fig. 2. it may be said that the battery room or con'lpartment is in the same way ventilated and the gases pass out from the cell through the trap or seal 10; The mode of operation of the instruction illustrated in this figure. in the event of the flooding of the battery room or compartment is the same. as hasbeen described in connection with Fig. 1. so that in the event of flooding with sea water the air and gases are trapped or confined in, the receptacle 1 and cannot be displaced by the entry of sea water and thus they prevent or oppose the eutry of sea water. Any air or gases escapin; by the trap which has been described can only do so after first displaciir; sea water from the trap.

'hat I claim is:

1. In a storage batter} the combination of a closed container or jar having an air inlet opening. and a dow'uu'mdly depending normally open trap applied to said opening to oppose the entry of sea water. substantially as described.

ln :1 secoudanv or storage batter the combination of a closed container or jar provided with an air inlet opening. an exhaust connection (Olflllllllllttlllllg with the container or jar and having means for making it ineffective, and a downwardly depending normally open trap applied to the opening to oppose the entry of sea water, SUhStfiIl- 5 tially as described.

3. In a storage battery the combination ()f a closed or container having a downwardly extending air inlet opening constituting n liquid seal to oppose the entry m sea Water. 10

In testimony wlnn'oof l llllVU horounto signed my name.

BRUCE FORD. lvitnoskosz Gib M. .Howluin, VVm'rAn ll. ln'nrnnson, 

